Meeting someone in the lounge would be a promising start for an Up in the Air type of romance based around what hotel and airline elite status cards they had in their wallet. Definitely on my dating bucket list.
Talking about Mr Lyan cocktails, I did find the Eurostar cocktail bars (when Mr Lyan ran those) were a more promising place to flirt. Perhaps the Paris link made things more light-hearted than your usual DFW connection out of Heathrow.